Trap.



I. L CURUS.

TRAP.

APPLICATION HLED FEB.5.\911.

l Patented Oct. 22, 1918.

lll mm JEREMIAH J'. CURTIS, OF WOLLASTON, MASSACHUSETTS.

TRAP. a

Specification of Letters Patent.

Patented Oct. 22, 1918.

Application led February 5, 1917. Serial No. 146,599.

To all 'whom t may concern:

Be it known that I, JEREMIAH J. CURTIS, a citizen of the United States, residing at Wollaston, in the county of NorfolkV and State of Massachusetts, have invented new and useful Improvements in Traps, of which the following is a specification.

This invention relates to a trap particularly adapted to be used in'connection with baths.

The object of the invention is to provide a trap in which the cleanout cover is so constructed as to be under a water seal. The invention consists in a trap constructed as hereinafter set forthin the specification and particularly in the combination of elements set forth in the claims.

Referring to the drawings:

Figure lis a side elevation, partly in section, illustrating my improved trapv in connection with a bath tub.

Fig. 2 is a sectional plan taken on line 2-2 of Fig; 1.

l Fig. 3 is a sectional elevation of a portion lof a modified form of my invention. Like numerals refer to like parts throughout the several views of the drawings.

In the drawings, 5 is the body portion of the trap, preferably formed of cast iron and having an inlet port 6 adjacent its lower end and a discharge port 7 located above said inlet port with a discharge branch or pipe 4 leading outwardly and upwardly from said discharge port 7 and terminating in an interiorly screw-threaded flange 8, to which is attached av pipe 9 by screw-threaded engagement therewith.

The body portion 5 of said'trap is preferably cylindrical and extends upwardly above the discharge outlet 7 to and preferably slightly above the floor line a. The bottom of the outlet of the discharge branch or pipe 4 is located beneath the top edge 11 of the body portion 5. A removable cover 12 has screwthreaded engagement with the upper end of the body portion 5 of the trap and is provided with a flange 13, preferably cylindrical, extending downwardly from the cover 12 to a point adjacent the upper edge of the discharge port 7. The' outer diameter'of said flange 13 is less than the inner diameter of that part of the body portion of the trap which extends above the discharge port 7.

The permanent level of water in the tra-p is substantially at the line b and the Hangs 13 projects downwardly into the trapbelow sairll permanent water level, thus forming a sea The body ort-ion 5 and the discharge pipe 4 are prefera ly integral with each other and made of cast metal, such as cast iron, while the inlet pipe 14 is preferably formed oflead and has an exterior annular flange 15 on its end which bears against an interior annular flange 16 on the body portion 5, said interior annular flange 16 surrounding the inlet port 6.

A boss 17 integral with the body portion 5 extends outwardly from the inlet port 6 and from the annular flange 16 and is interiorly screw-threaded at 18 to receive a sleeve 19 which has screw-threaded engagement therewith. The sleeve 19 encircles the pipe 14 and its inner end preferably bears against a washer 19 and forces the same against the Vflange 15 said sleeve preferably having a flange 2() on its outer end which may be hexagonal in contour in order that the sleeve 19 may be easily rotated by means of a wrench and the inner end of said sleeve brought to bear against the washer 19, whereby said flange may be clamped firmly against the .flange 16 on the body portion of the trap. The sleeve 19 is also preferably beveled on its inner edge as at 21 in order that solder may be introduced in the space between said edge 21 and the pipe. 14 and the pipe 14 sweated into the sleeve 19y to form a tight joint.

In use the general level of the water stands substantially at the height of the line b (Fig. l) and it will be seen that the flange 13 on the cover 12 projects downwardly into said water when it is at that level, thus forming a seal to prevent gas from backing up into the trap and passing out through the upper end thereof around the cover 12.

The outlet pipe 4 is connected in the usual manner with a bath tub 22 by waste pipes 23 and 24. 25 is the floor of the building in which the bath trap is located which may be of any usual construction.

In Fig. 3 a modied form of my invention is illustrated in which the cover 26 has a horizontal flange 27 and a vertical flange 28. the vertical flange 28 corresponding to the flange 13 in that form of my invention illustrated in Fig. 1 and said cover is fastened to the body portion 29 o f the trap by screws 30. In this form of my invention, as in. that formillustrated inFig. l, there is `an annular space 31 surrounding the flange l28 inside the body portion 29 of the trap.

I claim:

1. A trap having, in combination, a hollow body portion open at its upper end and having an inlet port adjacent its closed vlower .end-andhavingalso a discharge port,v

the space in said bodyportion between said ports being unobstructed, an inlet pipe and .a dischargepipe .connected tosaid inlet and discharge ports, respectively, said discharge pipe extending upwardly from said discharge .-port, a removable cover Vfast to the upperfend of said Vbody lportion and a flange on .said cover Vprojecting downwardly into saidibodyportion and terminating adjacent to Vand above ithe topof said discharge port,

. wherebysaid flange Vwill .project Vbelow the permanent water level in-saiditrap andeutlet-pipe and the water will have an unobstructed flow through said trap from said :inlet poi-tto said: discharge port.

2. .A trap having, in combination, a vhollow'body ,portion open atits upper end and Vhaving an inlet port ladjacent .its closed lower end and -.havingalso a discharge port,

y the space in said body portion betweenisaid .ports being unobstructed, an `inlet pipe and a discharge .pipe .connected to said inletand .discharge ports, respectively, said discharge 4pipe extending upwardly from said discharge portfand .having an outlet opening,

Athe `bottoni-of which, is above the .top -ofsaid discharge iport, `a removable cover fast to the upper end olf said body portion and .a flange on said cover projecting downwardly into said bodyportion and terminating below the bottom ofsaid discharge `pipe outlet, and above the top of said discharge Vport, -whereby said flange will project below the .permanent water level in said trap and ,ports being unobstructed, an inlet pipe and a discharge pipe connected to said inlet and discharge ports, respectively, said discharge tpipe 'extending upwardly from said disvcharge port and having an outlet opening,

Ythe bottomv of'whieh is above the top of said discharge pipe, a rremovable cover fast to the upper-end of said body portion, a cylin- -dricalliange'on said cover projecting downfwardlyiiiitoisaid bodyrportion andterniinat-A Y l ing below the bottom of said discharge pipe HBSSGS.

outlet, vand above the top of said .discharge port the outer diameter of said cylindrical Harige being less than the inner diameter .of @that portion olsaidrtrap to which said vhaving an inlet port adjacent its closed lower .end andhaving :also 4.a discharge port,

the space in said-body @portion between said portsbeingrunobstructed, an inlet `pipe :and a i discharge -:pipe connected to said inlet :and discharge ports, respectively, said discharge .pipe `extending upwardly from said discharge port, :a removable cover, a horizontal flange @on said cover extending over thevup- .per end -of said body gportionvand means' to fasten .said liangeto'said body portion, and a kvertical flange on said Acover projecting downwardly Vinto. said body :portion and terminating adjacent to 'and above 1thejtop of said discharge port, whereby said flange-will project'below the permanent water'level in said trap and outlet pipe andthe 4water will havean unobstructedflowthrough said trap from said inlet port to said discharge port.

f5. vA trap having, in eombinatioma v:hollow body gportieri openatitsupper .end and having an inlet portv adjacent its closed lower end andhaving alsov a discharge port,

the space in said body nportion between'said :ports being unobstructed, ian inlet pipe and a discharge pipe .connected Lto i said inlety and discharge ports, respectively, said discharge pipe extendingl upwardly lfrom said discharge port and having -an outlet opening, the bottom of Vsaid discharge pipe extending above the top of said discharge port, whereby 7the ltop of said discharge vport is located at all times below the 4water line, a removable closure and .screw-threaded i means attaching 'said closure .to saidbody portion Vand located-entirely above the permanent water line of said trap, L.whereby ithe :water will havean unobstruetedfiow through said trap from said inlet port ito said discharge port and said -fclosurebe water sealed.

lnftestimony whereof I vhave hereunto'set my hand in `presence of two subscribing wit- JEREMIAH J. CURTIS.

Witnesses: v CHARLES S. Girolamo, SYDNEY E. Tnr'i.

Gopiescf thispatent may he obtained for five cents each, Aby .addressing the Commissioner-ofliatents,

- Washington, Il). GJ 

